The square has great significance to a mason. Candidates for Masonry hope to obtain the privileges of the 'degree' by "the assistance of the square". The Masonic Lodge is duly opened on the square. Candidates are obligated within the square. Masons move on the square in the course of their Masonic duties.
The square has been used symbolically for thousands of years by non-Masons as well as by members of the Craft. The ancient Egyptian word for "square" was used as meaning "just" and "proper". To the non-masonic public today, a transaction is "on the square" when it is honest and above board. As a Masonic symbol, the square is very ancient and was familiar to the operative Masons. In 1830, workmen rebuilding a bridge near Limerick, Ireland, found an old, corroded brass square, inscribed with the words I WILL STRIVE TO LIVE WITH LOVE AND CARE UPON THE LEVEL - BY THE SQUARE, and dated 1517.